Track-link for tractors



T. R. PAULSEN.

TRACK LINK FOR TRACTORS.

APPLICATION FlLED DEC. 19, I919- RENEWED JULY 26, 192:.

1,39 1, 140, PatentedSept. 20, 1921 L-f'; H111 I In 'l "l lu. 'lllm.

" mmasfifaul en ATTORNEY UNITED STATES THOMAS R. PAULSEN, OF LOS ANGELES, CALIFORNIA.

TRACK-LINK ron 'macrons.

Specification of Letters Patent. Patented Sept, 20, i921.

Application filed December 19, 1919, Serial No. 346,112. Renewed July. 26, 1921. Serial No. 487,723.

geles, (al..) have invented certain new and useful Improvements in Track-Links for Tractors; and I do declare the following to be a clear, full, and exact description of the same, reference being had to the accompanying drawings. and to the characters of refcrence marked thereon, which form a part of this application.

This invention relates to improvements in links for tractors of the endless tread or track type, the object of the invention being to produce a combined link and shoe so formed that the strain of the pull of any tooth of the driving sprocket wheel is directed simultaneously against a pair of adjacent links and transmitted directly through the metal thereof instead of the strain coming on the connecting pin of such adjacent links.

Another object has been to produce such a link construction as will have a minimum of wearing surfaces, and which has no knuckling surfaces to impound dirt therebetween.

A further object is to provide a simple and inexpensive link and yet one which will be exceedingly effective for the purposes for which it is designed.

These objects I accomplish by means of such structure and relative arrangement of the parts as will fully appear by a perusal of the following specification and claim.

on the drawings, similar characters of reference indicate corresponding parts in the several views.

Figure 1 is a top plan view of a pair of adjacent and connected links.

Fig. 2 is a sectional view of one link taken on a line 2-2 of Fig. 1. 7

Referring now more particularly to the characters of reference on the drawings, the numeral 1 indicates the tread portion of the link which is preferably of ridged or V-section with the apex thereof adapted to rest on the, ground. Projecting horizontally from the ends of the .upper edges of the treadportion and transversely thereof are spaced bosses 2, those on one end being in staggered relation to those on the other end so that the bosses on the adjacent link may -aline themselves therewith.

The pair of bosses on one end most centrally located are connected to those on the other end of the link by parallel Webs or ribs 3, the outer faces of these ribs being smooth and adapted to ride on the rim 4 of thesprocket wheel or idler. These ribs are of course in substantially offset relation so that they project from the faces of one pair of bosses to the opposite faces of the pair on the other end of the link.

This construction as will be evident, permits of a straight alinement of the webs 3 throughout the track, and also provides for the positioning of a boss of each adjacent link in close alinement between the ribs.

.This feature permits the teeth '5 of the sprocket wheel 4 to bear simultaneously against the alined pair of bosses of any two links, the teeth being adapted to pass between the ribs 3 thus distributing the pressure of the sprocket teeth through the metal of two links simultaneously. and relieving the connecting pin 6 of the links of any strain at the point of contact of the sprocket teeth with the links. a

From the foregoing description it will readily be seen that I have produced such a device as substantially fulfils the objects of the invention as set forth herein.

While this specification sets forth in detail the present and preferred construction of the device, still'in practice, such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claim.

Having thus described my invention, what I claim as new and useful and desire to secure by Letters Patent is A link for tractor tread sections comprising a tread portion, parallel and horizontally alined webs arranged to support the rim of a sprocket wheel and to receive the teeth thereof therebetween, and transverse bosses adapted to receive the sprocket teeth thereagainst at the ends of the webs projecting therebetween, to a point adjacent the central 5 plane between the'webs, the boss at one end being in opposed relation from that at the other end, to permit the bosses of adjacent links toaline with each other and fit in the spaces between the inner termination of the bosses and the opposed webs. 10

In testimony whereof I aflix my si ature.

THOMAS R. PAULSEN. 

